Better health is central to human happiness and well-being. It also makes an important contribution to economic progress, as healthy populations live longer, are more productive, and save more. And because you know that healthy habits, such as eating well, exercising, and avoiding harmful substances, make sense, but did you ever stop to think about why you practice them? A healthy habit is any behavior that benefits your physical, mental, and emotional health. These habits improve your overall well-being and make you feel good.